1. Boil pigskin in cold water, add minced onion and ginger, cook wine, and turn to low heat for about 5-8 minutes.

2. Boiled pigskin is too cold, so wash it twice.

3. Use a knife to remove the excess grease from the pigskin until it is scraped clean, and the opposite hair should also be scraped clean.

The pigskin is cut into slender strips, which can be broken by a cooking machine.

5. Pour in white wine and wash with warm water for 2 minutes to remove the fishy smell.

6. Add baking soda, white vinegar and salt, and knead repeatedly to remove the grease inside.

7. Rinse with clear water for 4-5 times until the rinsed water is clear, so that the pigskin jelly will be crystal clear.

8. The ratio of pigskin to water is 1: 3. Steam in a steamer, add onion ginger, cooking wine, star anise and fragrant leaves, and steam over high fire for one and a half hours.